scholarly journals Pseduocapacitve Properties of CuO/Co3O4 Nanoparticles Synthesized Via Hydrothermal Method

2020 ◽  
Vol 9 (4) ◽  
pp. 1932-1934
Keyword(s):  
Hydrothermal Method ◽  
Synthesis Method ◽  
Impedance Analysis ◽  
Co3o4 Nanoparticles ◽  
Suitable Candidate ◽  
Ftir Studies ◽  
Morphology And Structure ◽  
Supercapacitor Applications ◽  
Eis Analysis ◽  
Charge Discharge

This paper discusses results obtained on CuO/Co3O4 nanoparticles synthesized through simple hydrothermal method with aid of the surfactant (Disodium citrate). The morphology and structure of the samples were examined through SEM, XRD and FTIR studies. Electrochemical investigations of the CuO/Co3O4 samples were studied through CV (cyclic voltammetry), (CHDH) charge- discharge and (EIS) impedance analysis by gel electrolyte. Specific capacitance value of 959 F g-1 at a scan rate of 2 mV s-1 was obtained. From EIS analysis, a low RCT value of 1.06 Ω was attained. Based on the electrochemical performance and ease synthesis method indicate that the prepared electrode (CuO/Co3O4) is suitable candidate for supercapacitor applications.

scholarly journals Synthesis, Characterizaiton of Cuo Nano-Rod for Supercapacitor Applications

2019 ◽  
Vol 8 (12S) ◽  
pp. 457-458
Keyword(s):  
Electrode Material ◽  
Solvothermal Synthesis ◽  
Synthesis Method ◽  
Electrode System ◽  
Suitable Candidate ◽  
Novel Approach ◽  
Prepared Material ◽  
Supercapacitor Applications ◽  
Cuo Nanorods ◽  
Na2so4 Electrolyte

A novel approach solvothermal synthesis method has been utilized to prepare CuO nanorods for electrochemical capacitors. A new method of synthesis has been adopted for the synthesis of CuO nanostructures. Structural, morphological features of the prepared material were studied by XRD and SEM respectively. Electrochemical supercapacitive performances of the modified electrode material were also analyzed by electrochemical workstation in three-electrode system. This material found to exhibit pesudocapacitive behavior with high capacitance of 135.23 F/g at the prevalent density of 1 A/g in 1M Na2SO4 electrolyte solution, proving a suitable candidate electrode material for supercapacitor applications.

scholarly journals Synthesis, Characterizaiton of CuO nano-rod for Supercapacitor Applications

2019 ◽  
Vol 9 (2S4) ◽  
pp. 268-269
Keyword(s):  
Electrode Material ◽  
Solvothermal Synthesis ◽  
Synthesis Method ◽  
Electrode System ◽  
Suitable Candidate ◽  
Novel Approach ◽  
Prepared Material ◽  
Supercapacitor Applications ◽  
Cuo Nanorods ◽  
Na2so4 Electrolyte

A novel approach solvothermal synthesis method has been utilized to prepare CuO nanorods for electrochemical capacitors. A new method of synthesis has been adopted for the synthesis of CuO nanostructures. Structural, morphological features of the prepared material were studied by XRD and SEM respectively. Electrochemical supercapacitive performances of the modified electrode material were also analyzed by electrochemical workstation in three-electrode system. This material found to exhibit pesudocapacitive behavior with high capacitance of 135.23 F/g at the prevalent density of 1 A/g in 1M Na2SO4 electrolyte solution, proving a suitable candidate electrode material for supercapacitor applications.

scholarly journals Co3O4 Nanoparticles Embedded in Mesoporous Carbon for Supercapacitor Applications

2021 ◽  
Author(s):  
Sirine Zallouz ◽  
Bénédicte Réty ◽  
Loïc Vidal ◽  
Jean-Marc Le Meins ◽  
Camélia Matei Ghimbeu
Keyword(s):  
Mesoporous Carbon ◽  
Co3o4 Nanoparticles ◽  
Supercapacitor Applications

scholarly journals Microwave-Assisted vs. Conventional Hydrothermal Synthesis of MoS2 Nanosheets: Application towards Hydrogen Evolution Reaction

Crystals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1040 ◽  
Author(s):  
Getachew Solomon ◽  
Raffaello Mazzaro ◽  
Vittorio Morandi ◽  
Isabella Concina ◽  
Alberto Vomiero
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Current Density ◽  
Crystal Morphology ◽  
Synthesis Method ◽  
Synthesis Methods ◽  
Mos2 Nanosheets ◽  
Microwave Assisted

Molybdenum sulfide (MoS2) has emerged as a promising catalyst for hydrogen evolution applications. The synthesis method mainly employed is a conventional hydrothermal method. This method requires a longer time compared to other methods such as microwave synthesis methods. There is a lack of comparison of the two synthesis methods in terms of crystal morphology and its electrochemical activities. In this work, MoS2 nanosheets are synthesized using both hydrothermal (HT-MoS2) and advanced microwave methods (MW-MoS2), their crystal morphology, and catalytical efficiency towards hydrogen evolution reaction (HER) were compared. MoS2 nanosheet is obtained using microwave-assisted synthesis in a very short time (30 min) compared to the 24 h hydrothermal synthesis method. Both methods produce thin and aggregated nanosheets. However, the nanosheets synthesized by the microwave method have a less crumpled structure and smoother edges compared to the hydrothermal method. The as-prepared nanosheets are tested and used as a catalyst for hydrogen evolution results in nearly similar electrocatalytic performance. Experimental results showed that: HT-MoS2 displays a current density of 10 mA/cm2 at overpotential (−280 mV) compared to MW-MoS2 which requires −320 mV to produce a similar current density, suggesting that the HT-MoS2 more active towards hydrogen evolutions reaction.

Multifunctionality exploration on NiCo2O4–rGO nanocomposites: Photochemical water oxidation, methanol electro-oxidation and asymmetric supercapacitor applications

2021 ◽  
Author(s):  
Vikash Gajraj ◽  
Alesh Kumar ◽  
Ekta Dadarwal ◽  
Rahul Kaushik ◽  
Amilan Jose Devadoss ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Hydrothermal Method ◽  
Water Oxidation ◽  
Asymmetric Supercapacitor ◽  
X Ray Diffraction ◽  
Facile Hydrothermal Method ◽  
X Ray ◽  
Electron Microscopies ◽  
Electro Oxidation ◽  
Supercapacitor Applications

Different weight percentages of NiCo2O4–rGO nanocomposites were prepared via a facile hydrothermal method. The prepared nanocomposites were structurally and morphologically characterized by X-ray diffraction, Raman spectroscopy and electron microscopies. The...

scholarly journals Significantly enhanced thermoelectric performance of Cu-doped p-type Bi0.5Sb1.5Te3 by a hydrothermal synthesis method

RSC Advances ◽  
2017 ◽  
Vol 7 (65) ◽  
pp. 41111-41116 ◽  
Author(s):  
Zichen Wei ◽  
Chenyang Wang ◽  
Li You ◽  
Shijie Zhao ◽  
Kang Yang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Electrical Conductivity ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Synthesis Method ◽  
Thermoelectric Performance ◽  
P Type

Increased electrical conductivity and decreased thermal conductivity were achieved simultaneously in the Cu-doped Bi0.5Sb1.5Te3 synthesized by a hydrothermal method.

scholarly journals The Charge-Discharge Characteristics of Woody Carbon Modified with Fe3O4 Nano Phase Using the Hydrothermal Method

2010 ◽  
Vol 51 (1) ◽  
pp. 186-191 ◽  
Author(s):  
Chih-Hsien Wang ◽  
Fei-Yi Hung ◽  
Truan-Sheng Lui ◽  
Li-Hui Chen
Keyword(s):  
Hydrothermal Method ◽  
Discharge Characteristics ◽  
Charge Discharge

Preparation and Characterization of High-Voltage Cathode Material LiNi0.5Mn1.5O4 for Lithium Ion Batteries

2019 ◽  
Vol 953 ◽  
pp. 121-126
Author(s):  
Zhe Chen ◽  
Quan Fang Chen ◽  
Sha Ne Zhang ◽  
Guo Dong Xu ◽  
Mao You Lin ◽  
...  
Keyword(s):  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Cathode Materials ◽  
Synthesis Method ◽  
Rate Capability ◽  
Lithium Ion ◽  
Diffusion Path ◽  
High Energy ◽  
High Energy Density ◽  
Charge Discharge

High energy density and rechargeable lithium ion batteries are attracting widely interest in renewable energy fields. The preparation of the high performance materials for electrodes has been regarded as the most challenging and innovative aspect. By utilizing a facile combustion synthesis method, pure nanostructure LiNi0.5Mn1.5O4 cathode material for lithium ion batteries were successfully fabricated. The crystal phase of the samples were characterized by X-Ray Diffraction, and micro-morphology as well as electrochemistry properties were also evaluated using FE-SEM, electrochemical charge-discharge test. The result shows the fabricated LiNi0.5Mn1.5O4 cathode materials had outstanding crystallinity and near-spherical morphologies. That obtained LiNi0.5Mn1.5O4 samples delivered an initial discharge capacity of 137.2 mAhg-1 at the 0.1 C together with excellent cycling stability and rate capability as positive electrodes in a lithium cell. The superior electrochemical performance of the as-prepared samples are owing to nanostructure particles possessing the shorter diffusion path for Li+ transport, and the nanostructure lead to large contact area to effectively improve the charge/discharge properties and the rate property. It is demonstrated that the as-prepared nanostructure LiNi0.5Mn1.5O4 samples have potential as cathode materials of lithium-ion battery for future new energy vehicles.

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